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Soil water residence time and solute uptake 2. Dye tracing and preferential flow predictions.

Trudgill, S.T., Pickles, A.M. and Smettem, K.R.J. (1983) Soil water residence time and solute uptake 2. Dye tracing and preferential flow predictions. Journal of Hydrology, 62 (1-4). pp. 279-285.

Link to Published Version: https://doi.org/10.1016/0022-1694(83)90107-5
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Abstract

The occurrence of preferential flow, by-passing soil peds, is predicted from the occurrence of rainfall intensities in excess of pedal sorption; depth of preferential tracer penetration is estimated from the displacement of this excess through a small operational volume of preferential flow, θf. θf-values estimated from column drainage experiments to lie between 0.01 and 0.03 cm3 cm-3 for rainfall intensities from 1 to 10 mm hr.-1, increasing to ∼ 0.1 cm3 cm-3 at saturation. Observed tracer penetration is compared with predicted tracer penetration and mean profile θf-values are calculated. The preferential flow calculations discussed provide a useful approximation for characterising field tracer behaviour.

Publication Type: Journal Article
Publisher: Elsevier B.V.
URI: http://researchrepository.murdoch.edu.au/id/eprint/37732
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